High severity · published Mar 11, 2026
CVE-2026-31872
Parse Server has a protected fields bypass via dot-notation in query and sort
7.5
CVSS
0.4%
EPSS
No
On KEV
Description
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.6 and 8.6.32, the protectedFields class-level permission (CLP) can be bypassed using dot-notation in query WHERE clauses and sort parameters. An attacker can use dot-notation to query or sort by sub-fields of a protected field, enabling a binary oracle attack to enumerate protected field values. This affects both MongoDB and PostgreSQL deployments. This vulnerability is fixed in 9.6.0-alpha.6 and 8.6.32.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 31% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PA
parse-server · parse-community
>= 9.0.0 < 9.6.0-alpha.6; < 8.6.32 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-31872
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-31872
Product
https://github.com/parse-community/parse-server/releases/tag/8.6.32
Product
https://github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.6
Patch
https://github.com/parse-community/parse-server/security/advisories/GHSA-r2m8-pxm9-9c4g
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